Finding the Third Proportional to 638,300 and 945,124

Step by Step Solution

1. Step 1: Write the proportion equation
   638,300 : 945,124 = 945,124 : x
2. Step 2: Convert to fraction form
   638,300/945,124 = 945,124/x
3. Step 3: Cross multiply
   638,300x = 945,124 × 945,124
4. Step 4: Simplify right side
   638,300x = 893,259,375,376
5. Step 5: Solve for x
   x = 893,259,375,376/638,300
6. Step 6: Final answer
   x = 1,399,435.02